A lot of the time, the key to making SQL databases perform well is to take a break from the keyboard and rethink the way of approaching the problem; and rethinking in terms of a set-based declarative approach. Joe takes a simple discussion abut a problem with a UDF to illustrate the point that ingrained procedural reflexes can often prevent us from seeing simpler set-based techniques.
2010-03-09
3,459 reads
We are inundated with new technologies and products designed to help make our organisations safe from hackers and other malcontents. One technology that has gained ground over the past few years is database activity monitoring. It makes sense to protect valuable databases, and by adding an intelligent monitor capable of sniffing out threats an additional level of protection can be gained.
But what is database activity monitoring and why should you care?
2010-03-08
4,755 reads
To be able to drill into multidimensional cube data at several levels, you must implement all of the hierarchies on the database dimensions. Then you'll create the attribute relationships necessary to optimize performance. Analysis Services hierarchies offer plenty of possibilities for displaying the data that your business requires. Rob Sheldon continues his series on SQL Server Analysis Services 2008.
2010-03-05
2,953 reads
Find out what makes Mnesia, the Erlang-based database management system, perfect for distribution across a network of computers.
2010-03-05
2,974 reads
The Data Mining Query Task can be used to run prediction queries based on data mining models built in analysis service.
2010-03-04
2,911 reads
This article will demonstrate an efficient way to reuse gaps in an identity column. Please note that this is something you normally shouldn't be bothered about in a well-designed database or application. However, there are circumstances where you are forced to do this.
2010-03-03
2,989 reads
XQuery and SQL/XML standard are processors for XML. SQL/XML was designed to try to match the capabilities of XQuery as closely as possible and XQuery was designed not only to support XML, but also to support relational processing. Read on to learn why this may have a negative influence on their capabilities.
2010-03-02
2,695 reads
This document contains steps that will assist you in the day-to-day SQL Server 2008 RTM Enterprise Edition (non-clustered) operations. It defines the basics of standard maintenance and checks for a single Instance of SQL Server 2008, and should be used as a starting point.
2010-03-01
3,120 reads
I have a requirement to implement a custom security scheme where roles and the user's place in the organization hierarchy are used to determine which customers a user can access. In particular the requirements are that a sales person can only access their customers and any other role can access any customer in their level of the organization hierarchy and below. We have a simple hierarchy that is made up of regions and offices. Can you provide us with an example of how to do this?
2010-03-01
3,410 reads
In this final look into his everyday essentials, Laerte Junior provides some useful scripts for the DBA that use an alternative way of error-logging. He shows how to use a PowerShell script to check and, if necessary, to defragment your indexes, write data to a SQL Server table, and change the collation for a table. Being an exceptional DBA just got a little easier.
2010-02-26
2,552 reads
With Fabric Mirroring, Microsoft is promoting a nice and appealing story for operational reporting...
If you’ve been watching AI roll through the data community and thinking, “this seems...
By Arun Sirpal
Not every production incident is a database in RECOVERY_PENDING or a corrupted event (like...
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
Hi All I am trying to find 'bad' characters that users might type in....
Comments posted to this topic are about the item Extreme DAX: Take your Power...
I set up a few users on my SQL Server 2022 instance.
CREATE LOGIN User1 WITH PASSWORD = 'Demo12#1' CREATE USER User1 FOR LOGIN User1 GO CREATE LOGIN User2 WITH PASSWORD = 'Demo12#2' CREATE USER User2 FOR LOGIN User2 GO CREATE LOGIN User3 WITH PASSWORD = 'Demo12#3' CREATE USER User3 FOR LOGIN User3 GOI then created a schema that one of them owned. Under this schema, I added a table with some data.
CREATE SCHEMA MySchema AUTHORIZATION User1
GO
CREATE TABLE Myschema.MyTable(myid INT)
GO
INSERT MySchema.MyTable
(
myid
)
VALUES
(1), (2), (3)
GO
SELECT * FROM MySchema.MyTable
GO
I granted rights and verified that User2 could access this table.
GRANT SELECT ON Myschema.MyTable TO User2 GO SETUSER 'USER2' GO SELECT * FROM MySchema.MyTable GOThis worked. Now, I move this schema to a new user.
ALTER AUTHORIZATION ON SCHEMA::Myschema TO User3; GOWhat happens with this code?
SETUSER 'USER2' GO SELECT * FROM MySchema.MyTable GOSee possible answers